What are the factors that improve the efficiency of cnc plasma and flame cutters?

  1. Plasma Empty voltage and arc column voltage.

    Plasma cutting power supply, must have a high enough empty load plasma voltage, in order to easily lead the plasma arc and make the plasma arc burning steadily. The empty voltage is generally 120-600V, while the arc column voltage is generally half the empty load voltage. Increasing the arc column voltage can significantly increase the power of the plasma arc, thus increasing the cutting speed and cutting a larger thickness of the metal sheet. Arc column voltage is often not reached by regulating the gas flow and increasing the shrinkage of the electrode, but the arc column voltage cannot exceed 65% of the empty load voltage, otherwise the plasma arc will be unstable.

  2. Plasma Cutting current.

    Increasing the plasma cutting current also increases the power of the plasma arc, but it is limited by the maximum allowable current, otherwise it will make the plasma arc column thicker, the width of the cut, and the electrode life decrease.

  3. Gas flow, air folow.

    Increasing the plasma gas flow can not only increase the arc column voltage, but also enhance the compression of the arc column, so that the plasma arc energy is more concentrated, the injection force is stronger, thus improving the cutting speed and quality. However, the gas flow is too large, but will make the arc column shorter, the loss of heat increased, so that the cutting capacity is weakened, until the plasma cutting process can not be carried out normally.

  4. Plasma In-electrode shrinkage.

    The so-called plasma internal shrinkage refers to the distance from the plasma electrode to the end face of the plasma cut mouth, the appropriate distance can make the arc in the cut mouth to get a good compression, to obtain energy concentration, high temperature of the plasma arc and effective cutting. Too large or too small distance, will cause the electrode serious burn, cut the mouth burned and reduce the cutting capacity. The indentation is generally 8-11mm.

  5. Cutting height.

    The height of the cut is the distance from the end face of the cut to the surface of the cut workpiece. The distance is generally 4 to 10mm. It is the same as the shrinkage of the plasma electrode, the distance should be appropriate in order to give full play to the cutting efficiency of the plasma arc, otherwise it will reduce the cutting efficiency and cutting quality or make the cut mouth burned.

    The above factors directly affect the compression effect of the plasma arc, that is, affect the temperature and energy density of the plasma arc, and the high temperature and high energy of the plasma arc determine the cutting speed, so the above factors are related to the cutting speed. Under the premise of ensuring the quality of plasma cutting, the cutting speed should be increased as much as possible. This not only increases productivity, but also reduces the amount of deformation of the cut part and the thermal impact area of the cut area. If the cutting speed is not suitable, the effect is reversed, and will increase the slag, the cutting quality is reduced.

    cut by cnc plasma cutting machine--High definition cnc plasma cutting machine CCL-G.HD